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17 June, 14:10

A 75.0-kg firefighter climbs a flight of stairs 28.0 m high. How much work does he do?

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  1. 17 June, 14:29
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    20.58 kJ

    Explanation:

    mass, m = 75 kg

    height, h = 28 m

    Work = m x g x h

    W = 75 x 9.8 x 28

    W = 20580 J

    W = 20.58 kJ

    Thus, the work done is 20.58 kJ.
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